import java.util.Scanner;

public class q3 {
    public static void main(String[] args)
        {
            Scanner scanner = new Scanner(System.in);
            System.out.print("请输入一个小写字母：");
            char ch = scanner.next().charAt(0);
            switch (ch) {
                case 'a':
                case 'b':
                case 'c':
                case 'd':
                case 'e':
                    System.out.println(ch + " 是元音字母");
                    break;
                default:
                    System.out.println("other");
            }
            scanner.close();
        }
}
